Here contaminations are removed from the saturated area by pumping out the groundwater. A calculation model allows the input of selected pump wells and pumping volumes to calculate a pollutant discharge. For this purpose, models are used to describe water flow and transport of pollutants.

The description of the pollutant transport via solution into the water, adsorption of the dissolved pollutant on the soil and disperse transport with the flow (delayed in the form of particles). As a result, the discharge behaviour of different pump arrangements can be shown in advance.

Example 2: Pollutant discharge from unsaturated zone

In the vadose zone of a contaminated site are components of tar oil, which are discharged due to the seepage water. A created seepage water model is used to gathering the flow of water, which causes the transport of pollutants. Also, this model serves to provide local moisture contents and pore velocities. These contribute significantly to the mass transfer of the pollutant in the seepage water.

After calibrating parameters, using experimental data, the future discharge behaviour can be calculated.

Example 3: Thermal hydraulic remediation

In this example, a thermal hydraulic remediation was carried out at a with tar oil contaminated site. In order to estimate the operating procedures, an Excel based calculation model was developed.